Tag Archives: linode

chef client linode node.cloud ipaddress workaround

The current version of the opscode chef-server and chef-client have some issues with cloud data with linode based hosts. It basically comes down to having a lot of nil values for the node attributes even though node.cloud is not nil or null This causes issues with many cookbooks which depend on these attributes being set – like nagios and mysql. the node.cloud attribute will return something like this: => {“public_ips”=>[“”], “private_ips”=>[nil], “public_ipv4″=>nil, “public_hostname”=>nil, “local_ipv4″=>nil, “local_hostname”=>nil, “provider”=>”linode”} The linode ruby gem is what is not setting these attributes correctly. The error may look like: Compiled Resource: —————— # Declared in /var/chef/cache/cookbooks/nagios/definitions/nagios_conf.rb:29:in `block in from_file’ Or mysql may not start The simplest workaround that I found was to look for the linode.rb file, which on Ubuntu is located somewhere like: /opt/chef/embedded/lib/ruby/gems/1.9.1/gems/ohai-6.20.0/lib/ohai/plugins/linode.rb Next I commented out the functions to return if this is a linode node or not and instead added the false value: # Identifies the linode cloud by preferring the hint, then # # Returns true or false def looks_like_linode? #hint?(‘linode’) || has_linode_kernel? false end It is a one line change and can be removed later and/or will be removed by reinstalling the chef omnibus package again – hopefully by then this linode issue will be fixed. Why this works: A lot of recipes try to be smart and if a node is on a cloud platform they will try to use the internal network address instead of the external address and fancy things like that. This change tells it “hey … Continue reading

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